200 SYSTEMATIC ENUMERATION OF THE SPECIES OF CALAMUS 
cent, longa spinulis brevibus seriatis in medio longitudinaliter 
armata, marginibus integris laevibas, praeditae ; frondes 60-70 
cent, longae, petiolo breviusculo subtus in medio spinis paucis soli- 
tariis rectis subreversis armato, rachi redunco-aculeata, segmentis 
non numerosis irregulariter fasciculatis, apicalibus basi disjunctis, 
basilaribus, majoribus, 25-28 cent, longis, 12-16 mill, latis, lanceo- 
lato-linearibus, subulato-acuminatis, in sicco viridibus, subtus palli- 
<iioribuS| tenuiter longitudinaliter nervosis et costa media sparse 
spinulosa, in facie superiore costulis tenuibus 3 spinulosis et 
nervulis niinoribus percursis^ marginibus minute spinuloso-serratis ; 
spadicis $ infl orescentiae partiales parte pedicellari praeditae, spicis 
non pedicellatis, brevibus 2-3 cent, longis, recurvis ; spathae secun- 
<lariae laeves ; fructus ovati, basi rotundati, apice conico-rostrati, 
13-15 mill, longi, 9 mill, lati, semine elongato-ovoideo, superficie fere 
aequabili, non ruminate, embryone basilari. 
Senegambia (Heudelot No. 372 in Herb. Webb, et Herb. Kew.) 
Gambia (Ingram in Herb. Kew). 
20. Calamus Leprieurii Becc. sp. n.— -Scandens ? Frondium 
petiolus furfurascens subtus et ad margines, et rachis tantum 
in medio, spinis validiusculis sparsis solitariis rectis horizontalibus 
armatus ; segmenta aequidistantia opposita, lineari-lanceolata 
acuminata, 15*17 cent, longa, 15 mill, lata, subtus pallidula, ad 
basin superne lateraliter spinula substipulaeformi praedita, utrinque 
in nervo primario solitario tantum spinulosa ; spicae 8-9 cent- 
longae, floribus erecto-patulis disticis utrinque 9-10; spathellis 
obconico-campanulatis apiculatis nudis, involucrophoro in fundo 
spathellae inserto ; perianthium fructiferum usque ad basin in 6 
lobos subaequales partitum ; fructus squamis basi stramineis, late 
brunneo-marginatis et apice scarioso fimbriate denticulato. 
Senegal (Leprieur in Herb. Leyd.) 
21. Calamus Perrotetii Becc. sp. n. — Calamo Leprieurii 
similis differt spicarum spathellis amplioribus flores amplectentibus, 
Senegal; on the River Casamanza (Perrotet, loth April 1829, No. 
761 .in Herb. Delessert.). 
22. Calamus Schweinfurthii Becc.— C. secundiflorus (not of 
P, de B.) Schw Centra. Africa. 
Group .---Leaves not produced into a cirrus, with very few^ 
usually radiating or digitate, leaflets. Primary and secondary 
spathes very elongate-tubular and strictly sheathing. Leaf-sheaths 
flagelliferous. Spadix $ and ? simply decompound ; partial in- 
florescences and spikelets not pedicellate and inserted at the 
